简介:Frequency-doubledantireflectioncoatingssimultaneouslyeffectiveat1064nmand532nmweredepositedonthelithiumtriborate(LiB3O5orLBO)crystalsusingtheelectronbeamevaporationmethod.Comparingwiththesamplewithoutbufferlayer,itisfoundthattheadhesionofthesamplewithbufferlayerofSiO2betweencoatingandLBOsubstrateisimprovedsignificantlyfrom137.4mNtogreaterthan200mN.Andthelaser-induceddamagethresholdisincreasedby20%from15.1J/cm2to18.6J/cm2.ThestrengtheningmechanismofadhesionofthebufferlayerofSiO2isdiscussedbyconsideringfullplasticindentationandsheartheory.
简介:由地可配置的nanogranularSiO2的基于的离子/电子的混合synaptic晶体管gated拍摄的indium–zinc-oxide(IZO)被报导。设备展出了上面的高当前的开/关比率107,∼14cm2V−1s−1和∼80mV/decade的一个低次于最低限度的秋千。门偏爱将在隧道/电介质接口调制在质子和电子之间的相互影响。由于在nanogranularSiO2电影以内的短暂质子流动的动态调整,隧道电流将动态地被修改。短期的synaptic粘性例如短期的potentiation和短期的消沉,在建议IZOsynaptic晶体管上被模仿。结果显示这里建议的synaptic晶体管在未来neuromorphic设备有潜在的应用。
简介:采用浸渍法制备了不同La掺杂量的Ni—SiO2催化剂,研究了La掺杂量对Ni—SiO2催化剂的Ni活性金属粒径、还原性能、甲烷催化裂解寿命以及反应后生成碳纤维的影响。结果表明:La、Ni物质的量比由0增长至0.3时,Ni-SiO2催化剂的寿命显著提高,而当La、Ni物质的量比由0.3增长至0.6时,催化剂寿命在一定程度上略有降低;La、Ni物质的量比由0增长至0.6时,还原后催化剂Ni金属的平均粒径从26.43nm不断降低至10.57nm。不同La掺杂量Ni—SiO2催化剂甲烷催化裂解过程中Ni金属平均粒径变化趋势明显不同,n(La):n(Ni)=0的Ni—SiO2催化剂随反应进行Ni金属平均粒径不断降低,而n(La):n(Ni)=0.3的Ni—SiO2催化剂随反应进行Ni金属平均粒径则不断升高。碳纤维形态受掺La掺杂量影响较大,随La、Ni物质的量比由0增长至0.3,反应过程中生成的碳纤维管径变粗,而随La、Ni物质的量比由0.3增长至0.6,碳纤维变短。
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简介:Newvisibletransparent,UVabsorption,andhighinfraredreflectionpropertieshavebeenrealizedbydepositingmultilayerSiO2/ZnO:Al/CeO2-TiO2/SiO2filmsontoglasssubstratesatlowtemperaturebyradiofrequencymagnetronsputtering.OptimumthicknessofSiO2,ZnO:Al(ZAO)andCeO2-TiO2(CTO)filmsweredesignedwiththeaidofthinfilmdesignsoftware.Thedegreeofantireflectioncanbecontrolledbyadjustingthethicknessandrefractiveindex.TheouterSiO2filmcandiminishtheinterferencecoloringandincreasethetransparency;theinnerSiO2filmimprovestheadhesionofthecoatingontheglasssubstrateandpreventsCa2+,Na+intheglasssubstratefromenteringtheZAOfilm.Theaveragetransmittanceinthevisiblelightrangeincreasesbynearly18%-20%,ascomparedtodoublelayerZAO/CTOfilms.Andthefilmsdisplayhighinfraredreflectionrateofabove75%inthewavelengthrangeof10-25μmandgoodUVabsorption(〉98%)properties.Thesesystemsareeasytoproduceonalargescaleatlowcostandexhibithighmechanicalandchemicaldurability.ThetriplefunctionalfilmswithhighUVabsorption,antireflectiveandhighinfraredreflectionratewilladapttoapplicationinflatpaneldisplayandarchitecturalcoatingglass,automotiveglass,withdiminishinglightpollutionaswellasdecreasingeyefatigueandincreasingcomfort.